SDCL § 31-4-191: State Highway 115 from U.S. Highway 18 to Interstate Highway 29.

The state trunk highway system includes the following in Lincoln and Minnehaha counties:

(1) From a point on U.S. Highway 18 west of Canton thence north via Sioux Falls to a point on 85th Street in Sioux Falls;

(2) From a point on 72nd Street North in Sioux Falls then north and west via Sioux Falls and Dell Rapids to a point on Interstate Highway 29 west of Dell Rapids.